Passivation tool

Abstract

The invention discloses a passivation tool which comprises a liquid storage bin, a handle, a roller and a liquid distribution pipe, and passivation liquid is contained in a bin chamber of the liquid storage bin; the handle is connected to the liquid storage bin; a plurality of rollers are arranged, and the plurality of rollers are coaxially and rotatably arranged at the liquid outlet end of the liquid storage bin; the liquid distribution pipes are connected to a liquid outlet of the liquid storage bin, and the surface of the roller corresponds to an outlet of at least one liquid distribution pipe; the wheel faces of the rolling wheels are coated with sponge layers, and the number of the liquid distribution pipes corresponding to different rolling wheels is the same. According to the passivation tool, the smearing uniformity of passivation liquid medicine is better, the liquid medicine is saved, and the passivation effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor manufacturing auxiliary devices, and in particular to a passivation tool. Background Art

[0002] In the manufacturing process of solar photovoltaic products, passivation technology plays a vital role, which can significantly improve the performance and stability of solar cells.

[0003] Existing passivation tools such as passivation brushes have a simple structure. A whole sponge strip is directly installed on the liquid outlet end of the passivation brush, and the flow rate of the liquid medicine cannot be controlled. Due to uneven force applied by the user during use or problems with the sponge material, it is easy to cause waste of liquid medicine and uneven smearing of the passivation liquid on the surface, resulting in unsatisfactory passivation effect. Summary of the invention

[0004] In view of this, the present invention provides a passivation tool, which makes the application uniformity of the passivation liquid better, which not only saves the liquid but also improves the passivation effect.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A passivation tool, comprising:

[0007] A liquid storage bin, wherein a chamber of the liquid storage bin contains a passivation liquid;

[0008] A handle connected to the liquid storage tank;

[0009] A plurality of rollers are provided, and the plurality of rollers are coaxially rotatably arranged at the liquid outlet end of the liquid storage bin;

[0010] A liquid dispensing tube connected to the liquid outlet of the liquid storage bin, and the surface of the roller is arranged corresponding to at least one outlet of the liquid dispensing tube;

[0011] The wheel surface of the roller is covered with a sponge layer, and the number of the dispensing tubes corresponding to different rollers is the same.

[0012] Optionally, each of the liquid dispensing tubes is provided with a flow control valve, and the flow control valve is communicatively connected to the controller.

[0013] Optionally, the handle is a shell structure provided with a through cavity, one end opening of the through cavity is connected to the liquid inlet of the liquid storage tank, and the other end is connected to the liquid filling port, and a sealing cover is connected to the liquid filling port.

[0014] Optionally, the sealing cap is threadedly connected to the liquid filling port.

[0015] Optionally, a liquid outlet end of the liquid storage tank is fixedly connected to a rotating shaft, and the plurality of rollers are rotatably connected to the rotating shaft.

[0016] Optionally, a shielding cavity is provided at one end of the liquid storage bin close to the liquid outlet end, and the rotating shaft is fixedly connected to the side wall of the shielding cavity.

[0017] Optionally, an observation port is provided on the liquid storage bin, and a sealing plate made of a transparent material is sealed and connected to the observation port;

[0018] The observation port is extended along the height direction of the liquid storage bin.

[0019] Optionally, the dispensing tube is a capillary tube.

[0020] Optionally, each of the liquid dispensing tubes corresponds to one of the rollers;

[0021] Alternatively, every two of the dispensing tubes correspond to one roller.

[0022] Optionally, the liquid storage tank and the handle are an integrated structure or a separate structure.

[0023] It can be seen from the above technical solution that the passivation tool provided by the present invention is provided with a plurality of rotating rollers, and the wheel surface of the roller is provided corresponding to the liquid outlet of the corresponding dispensing tube, so as to evenly distribute the passivation liquid in the liquid storage tank to the surface of each roller used to apply the passivation liquid, thereby achieving uniform output of the passivation liquid. The passivation liquid flows evenly to different rollers under the action of gravity, and the liquid outflow of different dispensing tubes is the same, so that the liquid output is uniform, avoiding the problem of uneven liquid output caused by sponge material problems in the prior art. Since the liquid output is uniform, the application uniformity of the liquid is better, which not only saves the liquid, but also improves the passivation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a passivation tool provided by an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure in which a passivation tool is used to remove part of the side wall of the shielding cavity;

[0027] Figure 3 A schematic structural diagram of a passivation tool provided in another embodiment of the present invention;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure in which a passivation tool is used to remove part of the side wall of the shielding cavity;

[0029] Figure 5 A schematic diagram of the connection structure between a handle and a liquid storage tank provided in one embodiment of the present invention;

[0030] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure at the AA position in FIG.

[0031] Figure 7 A schematic diagram of the connection structure between a handle and a liquid storage tank provided in another embodiment of the present invention;

[0032] Figure 8 for Figure 7 A schematic cross-sectional view of the BB position in FIG.

[0033] Fig. 9 A schematic cross-sectional view of a connection structure between a handle and a liquid storage tank provided in yet another embodiment of the present invention.

[0034] in:

[0035] 1. Capping,

[0036] 2. Handle,

[0037] 201, through the cavity,

[0038] 3. Liquid storage tank,

[0039] 301, liquid outlet, 302, observation port,

[0040] 4. Roller,

[0041] 5. Liquid injection port,

[0042] 6. Dispensing tube,

[0043] 7. Rotating shaft,

[0044] 8. Block the cavity. DETAILED DESCRIPTION

[0045] The invention discloses a passivation tool, which makes the application uniformity of the passivation liquid better, not only saves the liquid but also improves the passivation effect.

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figures 1 to 6 The passivation tool of the present invention comprises a liquid storage bin 3, a handle 2, a liquid dispensing tube 6 and a roller 4. The chamber of the liquid storage bin 3 is used to contain the passivation liquid. The handle 2 is connected to the liquid storage bin 3. There are multiple rollers 4, and the multiple rollers 4 are coaxially rotatably arranged at the liquid outlet end of the liquid storage bin 3. One end of the liquid dispensing tube 6 is connected to the liquid outlet hole 301 at the bottom of the liquid storage bin 3, and the surface of the roller 4 is arranged corresponding to the outlet of at least one liquid dispensing tube 6. The wheel surface of the roller 4 is covered with a sponge layer, and the number of liquid dispensing tubes 6 corresponding to different rollers 4 is the same, so as to ensure that the flow rate of the passivation liquid flowing to different rollers 4 is as similar as possible.

[0048] Among them, the liquid inlet end of the liquid dispensing tube 6 is connected to the liquid outlet hole 301 at the bottom of the liquid storage bin 3, and the liquid dispensing tube 6 is vertically arranged at the bottom of the liquid storage bin 3. The liquid dispensing tube 6 is used to transport the passivation liquid in the liquid storage bin 3 to the surface of the roller 4. By coating the wheel surface of the roller 4 with a sponge layer, the sponge layer is a passivation liquid coating layer, so that the passivation liquid is quickly transferred to the entire wheel surface. Multiple rollers 4 are arranged side by side. Different liquid dispensing tubes 6 have the same diameter. Different liquid dispensing tubes 6 are evenly distributed along the arrangement direction of the rollers 4. Different rollers 4 have the same diameter.

[0049] The passivation tool of the present invention is provided with a plurality of rotating rollers 4, and the wheel surfaces of the rollers 4 are provided correspondingly to the liquid outlets of the corresponding liquid dispensing tubes 6, so that the passivation liquid in the liquid storage tank 3 is evenly distributed to the surfaces of the rollers 4 used to apply the passivation liquid, thereby achieving uniform output of the passivation liquid. The passivation liquid flows evenly to the different rollers 4 under the action of gravity, and the liquid outflows of different liquid dispensing tubes 6 are the same, so that the liquid output is uniform, avoiding the problem of uneven liquid output due to sponge material problems in the prior art. Since the liquid output is uniform, the application uniformity of the liquid is better, which not only saves the liquid, but also improves the passivation effect.

[0050] In order to facilitate the control of the flow rate of the liquid medicine in the liquid dispensing tube 6, each liquid dispensing tube 6 is provided with a flow control valve (not shown in the figure), and the flow control valve is connected to the controller for communication. The controller is mounted on the outer surface of the handle 2. The controller controls the opening of the flow control valve to achieve accurate control of the flow rate of the liquid medicine. The method by which the controller controls the opening of the flow control valve is a prior art.

[0051] In one embodiment, the handle 2 is a shell structure provided with a through cavity 201, one end of the through cavity 201 is connected to the liquid inlet of the liquid storage tank 3, and the other end is connected to the injection port 5. The injection port 5 is used to inject the passivation liquid, and the passivation liquid flows into the inner cavity of the liquid storage tank 3 along the through cavity 201 to complete the injection of the passivation liquid. In order to seal the injection port 5, a cover 1 is detachably connected to the injection port 5, and the cover 1 is used to block the injection port 5.

[0052] Furthermore, an outer side surface of the liquid injection port 5 is provided with an outer thread, and an inner side surface of the cover 1 is provided with an inner thread, and the cover 1 is threadedly connected to the liquid injection port 5. In order to improve the sealing performance, a sealing gasket is provided on the surface of the cover 1 close to the liquid injection port 5, so that when the cover 1 is threadedly connected to the liquid injection port 5, the sealing gasket on the cover 1 is pressed against the end surface of the liquid injection port 5 to achieve reliable sealing.

[0053] In order to facilitate the rotation of the plurality of rollers 4, the liquid outlet end of the liquid storage tank 3 is fixedly connected with a rotating shaft 7. Figure 2 and Figure 4 As shown, a plurality of rollers 4 are rotatably connected to a rotating shaft 7. When the rollers 4 rotate around the rotating shaft 7, the passivation liquid on the wheel surface is evenly applied to the passivation surface.

[0054] In order to protect the dispensing tube 6 and the roller 4, a shielding cavity 8 is provided at one end of the liquid storage tank 3 near the liquid outlet end, and the rotating shaft 7 is fixedly connected to the side wall of the shielding cavity 8, so that the roller 4 is arranged in the shielding cavity 8. It can be understood that in order to facilitate the application of the liquid medicine, the wheel surface of the roller 4 away from the liquid storage tank 3 protrudes from the bottom of the shielding cavity 8, as shown in FIG. Figure 1 and Figure 3 As shown, since the liquid dispensing tube 6 is disposed between the roller 4 and the liquid storage bin 3, the liquid dispensing tube 6 is located in the shielding cavity 8, thereby protecting the liquid dispensing tube 6 and preventing the liquid dispensing tube 6 from being damaged by external forces.

[0055] In order to facilitate checking the amount of the passivation solution in the liquid storage tank 3, an observation port 302 is provided on the liquid storage tank 3. Figures 7 to 9 As shown, the observation port 302 is sealed with a transparent sealing plate. The sealing plate is made of plastic or glass. Specifically, the observation port 302 is extended along the height direction of the liquid storage tank 3, thereby expanding the height range of observation. In one embodiment, Figure 8 The liquid storage tank 3 is provided with an observation port 302. In another embodiment, Fig. 9 The liquid storage bin 3 is provided with two observation ports 302 , and the two observation ports 302 are provided on two oppositely disposed side walls of the liquid storage bin 3 .

[0056] The liquid dispensing tube 6 may be a capillary tube.

[0057] In one embodiment, referring to Figure 1 and Figure 2 As shown, each dispensing tube 6 corresponds to a roller 4. In another embodiment, every two dispensing tubes 6 correspond to a roller 4. Figure 3 and Figure 4 shown.

[0058] Specifically, the liquid storage tank 3 and the handle 2 are integrally injection molded structures. Alternatively, the liquid storage tank 3 and the handle 2 are separate structures, and the two are welded together.

[0059] The passivation tool of the present invention comprises an upper liquid storage bin 3 and a lower coating roller 4, with clear functional division and simple structure. By evenly distributing a liquid dispensing tube 6 at the liquid outlet end of the liquid storage bin 3, the liquid dispensing tube 6 is arranged corresponding to the coating surface of the roller 4 at the bottom, so that the liquid medicine in the liquid storage bin 3 is evenly diverted to the coating position, ensuring the uniform distribution of the liquid medicine. By using a roller 4 of uniform size, and using a capillary to absorb the liquid medicine and evenly apply it to the wheel surface, the uniform coverage of the passivation liquid medicine is ensured. By setting the flow control valve, the flow of the liquid medicine is controlled in real time, and the amount of the liquid medicine is accurately adjusted, so as to avoid wasting the liquid medicine and improve the coating effect.

[0060] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this solution.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this solution, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A passivation tool, characterized in that: include: A liquid storage bin, wherein a chamber of the liquid storage bin contains a passivation liquid; A handle connected to the liquid storage tank; A plurality of rollers are provided, and the plurality of rollers are coaxially rotatably arranged at the liquid outlet end of the liquid storage bin; A liquid dispensing tube connected to the liquid outlet of the liquid storage bin, and the surface of the roller is arranged corresponding to at least one outlet of the liquid dispensing tube; The wheel surface of the roller is covered with a sponge layer, and the number of the dispensing tubes corresponding to different rollers is the same.

2. The passivation tool according to claim 1, characterized in that Each of the liquid dispensing tubes is provided with a flow control valve, and the flow control valve is communicatively connected with the controller.

3. The passivation tool according to claim 1, characterized in that: The handle is a shell structure provided with a through cavity, one end opening of the through cavity is connected to the liquid inlet of the liquid storage bin, and the other end is communicated with the liquid injection port, and a sealing cover is connected to the liquid injection port.

4. The passivation tool according to claim 3, characterized in that: The sealing cover is threadedly connected to the liquid injection port.

5. The passivation tool according to claim 1, characterized in that: The liquid outlet end of the liquid storage bin is fixedly connected with a rotating shaft, and the plurality of rollers are rotatably connected to the rotating shaft.

6. The passivation tool according to claim 5, characterized in that A shielding cavity is arranged at one end of the liquid storage bin close to the liquid outlet end, and the rotating shaft is fixedly connected to the side wall of the shielding cavity.

7. The passivation tool according to claim 1, characterized in that: The liquid storage bin is provided with an observation port, and a sealing plate made of a transparent material is sealed and connected to the observation port; The observation port is extended along the height direction of the liquid storage bin.

8. The passivation tool according to claim 1, characterized in that: The dispensing tube is a capillary tube.

9. The passivation tool according to claim 1, characterized in that: Each of the dispensing tubes corresponds to one of the rollers; Alternatively, every two of the dispensing tubes correspond to one roller.

10. The passivation tool according to claim 1, characterized in that The liquid storage bin and the handle are an integrated structure or a separate structure.

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